Fin for a watercraft



FIG. 1 is a top plan view of a fin for a watercraft showing our new design.

FIG. 2 is a left elevation view of FIG. 1.

FIG. 3 is a bottom plan view of FIG. 1.

FIG. 4 is a bottom perspective view of FIG. 1.

FIG. 5 is a top perspective view of FIG. 1.

FIG. 6 is a right elevation view of FIG. 1.

FIG. 7 is rear elevation view of FIG. 1; and,

FIG. 8 is a front elevation view of FIG. 1.

The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a fin for a watercraft, as shown and described. 